Common tankless water heater problems hot water is not delivered instantly and other common tankless water heater problems are listed below.
Tankless water heater water pressure issues.
If you see chunks of sediment or water appears cloudy or rusty.
Plus there is a slight delay between the time they detect water flow and when the heaters actually kick on.
Since these water heaters do not activate until they sense actual water flow within they do not keep any reservoir of hot water.
Always eliminate the easy fixes first such as the natural gas being turned off or an empty propane tank.
When the water pressure becomes high enough for the heater to manage then the tankless water heater repair situation arises.
Hard water leading to mineral build up corrosion excessive demand and improper installation can all cause problems with on demand water heaters.
How to check test the pressure.
Then move to other more complicated causes.
Rinnai tankless water heater problems.
The air supply and specialized exhausts have a tendency to get blocked which usually makes the device shut down.
When no water is turned on our pressure measures 10 not sure of the unit guessing psi and then when you turn on the shower the gas pressure drops to 2 which greatly reduces the water pressure.
Hot water delivery issues the dreaded tankless water heater pause.
Testing the water pressure is vital as it might indicate not only low but high pressure too.
It is to be noted that too much of water pressure is not good as it puts unwanted strain on the heating system and the entire plumbing material.
A high quality tankless water heater should last 20 years but it must be properly maintained.
The burner is too noisy.
With so many wires and small parts tankless hot water heaters can have a long list of possible problems.
When you receive a flame failure error message on a gas tankless water heater the issue is typically either a gas pressure issue or an electrial problem.
Here are the best ways to address these issues.
System overload or breakdown.
This would eventually lead to the breakdown of the heater.
Here are six of the most common problems and maintenance concerns for tankless water heaters mineral buildupsystem overloadcold water sandwichair supply or exhaust blockageignition failureflame failurekeep reading to learn what signs to look for when identifying these issues and how to fix them problem 1.
Water is not hot enough.
Changes in water quality.
Burner does not ignite.
Mineral buildup whether you use a traditional or a tankless water heater you need to keep an eye out for mineral buildup inside your water heater.
If low pressure is due to the low flow showerhead for example and your tankless water heater cannot get the required water flow change the showerhead to a newer model.
Air supply or exhaust blockage message.
No hot water often related to the flame failure and no ignition water is too hot.
The plumber and tankless rep said it must be the gas regulator.
Common tankless water heater problems.
He pilot light can go out or fail to ignite and the sensors can simply quit working without any explanation.